San Augustine and Sabine Counties, Texas

Survey Area TX619• Texas

The dominant drainage class is Well drained and the dominant hydrologic group is D (very slow infiltration, high runoff). The most common soil order is Alfisols — moderately leached forest soils with a clay-enriched subsoil. This report summarizes the major soil map units across the survey area to help you understand what to expect when buying, building, or gardening in San Augustine and Sabine Counties, Texas. Search your address to find the exact soil composition, drainage, and series details at your specific location.

Soil Map Unit	Acres	Drainage	Hydro Group	Dwellings	Septic
Water	95K		D	Not rated	Not rated
Moswell loam, 1 to 5 percent slopes	62K	Well drained	D	Very limited	Very limited
Moswell loam, 5 to 15 percent slopes	42K	Well drained	D	Very limited	Very limited
Cuthbert fine sandy loam, 5 to 15 percent slopes	39K	Well drained	C	Somewhat limited	Very limited
Metcalf-Sawtown complex, 0 to 2 percent slopes	30K	Somewhat poorly drained	C	Very limited	Very limited
Mattex-Iulus complex, 0 to 1 percent slopes, frequently flooded	29K	Somewhat poorly drained	C/D	Very limited	Very limited
Kirvin fine sandy loam, 1 to 5 percent slopes	25K	Well drained	C	Somewhat limited	Very limited
Eastwood very fine sandy loam, 1 to 5 percent slopes	23K	Well drained	C	Very limited	Very limited
Laneville loam, 0 to 1 percent slopes, frequently flooded	17K	Moderately well drained	C/D	Very limited	Very limited
Tenaha loamy fine sand, 1 to 5 percent slopes	17K	Well drained	B	Not limited	Very limited
Trawick gravelly clay loam, 5 to 15 percent slopes	17K	Well drained	C	Somewhat limited	Very limited
Tenaha loamy fine sand, 5 to 15 percent slopes	16K	Well drained	B	Somewhat limited	Very limited
Nacogdoches clay loam, 1 to 5 percent slopes	16K	Well drained	C	Somewhat limited	Very limited
Penning-Kurth complex, 0 to 2 percent slopes	14K	Moderately well drained	C	Somewhat limited	Very limited
Eastwood very fine sandy loam, 5 to 15 percent slopes	13K	Well drained	D	Very limited	Very limited
Raylake clay, 1 to 5 percent slopes	13K	Somewhat poorly drained	D	Very limited	Very limited
Iulus fine sandy loam, 0 to 1 percent slopes, occasionally flooded	13K	Moderately well drained	C	Very limited	Very limited
Nacogdoches fine sandy loam, 1 to 5 percent slopes	12K	Well drained	C	Somewhat limited	Very limited
Kurth fine sandy loam, 1 to 3 percent slopes	11K	Moderately well drained	C	Somewhat limited	Very limited
Bowie fine sandy loam, 1 to 5 percent slopes	11K	Well drained	B	Somewhat limited	Very limited

Soil Orders in This Area

The USDA classifies every soil into one of 12 soil orders. Here are the dominant orders found in this survey area.

Alfisols

Moderately weathered forest soils with clay-enriched subsoil. Productive for agriculture, generally good for building and septic.

Ultisols

Strongly weathered clay soils of the Southeast. Acidic and naturally low in nutrients. Clay subsoil can slow drainage.

Inceptisols

Young but developing soils found in mountains and river terraces. Variable properties — check drainage and bedrock depth.

Vertisols

High-clay soils that shrink and swell dramatically. Fertile but challenging for foundations and septic systems.

What This Means

Building & Foundations

About 46% of soils have significant building limitations, while the rest are generally suitable. Check specific sites carefully — conditions vary across the area.

Septic Systems

About 81% of soils are rated "very limited" for septic absorption fields. Despite good drainage overall, limitations may stem from shallow bedrock, steep slopes, or seasonal conditions. Engineered or alternative systems are frequently required. Always get a professional perc test before purchasing land that needs septic.

Gardening & Agriculture

Drainage is generally favorable for gardening. Adding compost and mulch will improve fertility and water retention. Test your soil's pH before planting — most vegetables prefer 6.0-7.0.